31555345343 has 2 divisors, whose sum is σ = 31555345344. Its totient is φ = 31555345342.

The previous prime is 31555345337. The next prime is 31555345357. The reversal of 31555345343 is 34354355513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31555345343 - 2⁶ = 31555345279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31555345343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31555345333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15777672671 + 15777672672.

It is an arithmetic number, because the mean of its divisors is an integer number (15777672672).

Almost surely, 2^31555345343 is an apocalyptic number.

31555345343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31555345343 is an equidigital number, since it uses as much as digits as its factorization.

31555345343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810000, while the sum is 41.

The spelling of 31555345343 in words is "thirty-one billion, five hundred fifty-five million, three hundred forty-five thousand, three hundred forty-three".